13186048657 has 8 divisors (see below), whose sum is σ = 14443137000. Its totient is φ = 11982453504.

The previous prime is 13186048639. The next prime is 13186048661. The reversal of 13186048657 is 75684068131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4124722176 + 9061326481 = 64224^2 + 95191^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13186048657 - 2¹¹ = 13186046609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13186048657.

It is not an unprimeable number, because it can be changed into a prime (13186048457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13372782 + ... + 13373767.

It is an arithmetic number, because the mean of its divisors is an integer number (1805392125).

Almost surely, 2^13186048657 is an apocalyptic number.

13186048657 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13186048657 is a deficient number, since it is larger than the sum of its proper divisors (1257088343).

13186048657 is a wasteful number, since it uses less digits than its factorization.

13186048657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26746595.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 13186048657 in words is "thirteen billion, one hundred eighty-six million, forty-eight thousand, six hundred fifty-seven".